Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 2 | $0 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 690 | $97 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 1,597 | $201 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 14,137 | $1,935 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 2,472 | $378 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 778 | $151 | $209.21 | $188.78 - $238.00 |
| Q1 2024 | 4,108 | $886 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 663 | $172 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 691 | $178 | $267.47 | $251.85 - $287.60 |
| Q4 2022 | 907 | $251 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 3,230 | $862 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 193 | $39 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 5,237 | $1,102 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 100 | $23 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 4,810 | $1,361 | $327.75 | $282.64 - $372.12 |
| Q4 2020 | 9,158 | $2,242 | $259.08 | $223.25 - $363.92 |
| Q4 2019 | 6,003 | $1,781 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 12,575 | $2,927 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 700 | $163 | $230.90 | $219.20 - $245.35 |
| Q4 2018 | 2,902 | $873 | $319.14 | $278.46 - $358.41 |
| Q2 2018 | 5,774 | $1,675 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 3,028 | $829 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 322 | $102 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 3,909 | $1,223 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 210 | $56 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 7,768 | $2,123 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 8,552 | $2,425 | $296.43 | $268.00 - $329.83 |
| Q1 2016 | 247 | $64 | $264.15 | $242.07 - $301.02 |
| Q2 2015 | 1,727 | $697 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 4,813 | $2,032 | $394.14 | $334.40 - $480.18 |
| Q3 2014 | 739 | $244 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 5,937 | $1,871 | $300.97 | $272.02 - $322.25 |